CA2572148A1 - Impeller drive for a water jet propulsion unit - Google Patents

Impeller drive for a water jet propulsion unit Download PDF

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Publication number
CA2572148A1
CA2572148A1 CA002572148A CA2572148A CA2572148A1 CA 2572148 A1 CA2572148 A1 CA 2572148A1 CA 002572148 A CA002572148 A CA 002572148A CA 2572148 A CA2572148 A CA 2572148A CA 2572148 A1 CA2572148 A1 CA 2572148A1
Authority
CA
Canada
Prior art keywords
impeller
propulsion unit
downstream
upstream
impellers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002572148A
Other languages
French (fr)
Other versions
CA2572148C (en
Inventor
Paul Mark Paterson
Barry John Davies
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Propeller Jet Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34067500&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2572148(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2572148A1 publication Critical patent/CA2572148A1/en
Application granted granted Critical
Publication of CA2572148C publication Critical patent/CA2572148C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/10—Marine propulsion by water jets the propulsive medium being ambient water having means for deflecting jet or influencing cross-section thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D1/06—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/181—Axial flow rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B63H2011/081—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction

Abstract

A water propulsion unit having an intake housing, a pump housing and an outlet with two spaced apart counter rotating impellers being located in the pump housing. The impeller blades on one impeller have an opposite pitch to the blades of the second impeller. The impellers are configured so that one of the impellers will impart less energy to the water as it passes the blades of the impeller than the second impeller.

Claims (22)

1. A water propulsion unit including an upstream impeller and a downstream impeller, a pump housing, a water inlet to communicate with the upstream impeller and an outlet to communicate with the downstream impeller, the said impellers being mounted on and, in use, driven by shafts so as to be co-axial with each other, within the pump housing; said impellers are spaced apart and are adapted to be rotated within the pump housing in opposite directions, and wherein each impeller includes a series of impeller blades extending radially from a central boss, and the blades of the upstream impeller are of opposite pitch to the blades of the downstream impeller, characterised in that, one of the impellers is arranged to impart less energy to the water than the other impeller; and wherein the cross-sectional area of the outlet is such that in use it presents minimal impedance to the flow of water therethrough.
2. The water propulsion unit of claim 1, wherein the downstream impeller is adapted to remove a substantial amount of the radial energy in the water as it passes the downstream impeller.
3. The water propulsion unit of claim 1 wherein it is used as a vessel propulsion unit.
4. The water propulsion unit of claim 1, wherein the unit is configured so the suction generated by the downstream impeller in the area between the upstream impeller and the downstream impeller is controlled.
5. The water propulsion unit of claim 1, wherein the upstream impeller imparts greater energy to the water than the downstream impeller.
6. The water propulsion unit of claim 1, wherein one of the impellers is formed with fewer blades than the other impeller.
7. The water propulsion unit of claim 6, wherein the upstream impeller has fewer blades than the downstream impeller.
8. The water propulsion unit of claim 1, wherein one of the impellers has blades of a closed configuration and the second impeller has blades of an open configuration.
9. The water propulsion unit of claim 1, wherein the blades of the upstream and the downstream impellers are of open configuration.
10. The water propulsion unit of claim 1, wherein a clearance is left between the tips of the blades of one of the impellers and the inner wall of the pump housing.
11. The water propulsion unit of claim 1, wherein the rotational speed of the downstream impeller is less that the rotational speed of the upstream impeller.
12. The water propulsion unit of claim 1, wherein both impellers are mounted on concentric counter-rotating shafts.
13. The water propulsion unit of claim 1, wherein the two impellers are driven from a single engine through reduction gearing to provide the desired ratio of rotational speeds between the upstream and downstream impellers.
14. The water propulsion unit of claim 1, wherein the ratio of rotational speeds between the downstream and the upstream impellers is fixed.
15. The water propulsion unit of claim 13, wherein the ratio of rotational speeds between the downstream and the upstream impellers can be altered.
16. The water propulsion unit of claim 15, wherein each impeller is driven by a separate engine.
17. The water propulsion unit of claim 1, wherein the intake housing is bulged outwardly upstream of the upstream impeller.
18. The water propulsion unit of claim 1, wherein means are provided to vary the cross sectional area of the interior of the pump housing between the upstream and the downstream impellers.
19. The water propulsion unit of claim 1, wherein means are provided to vary the cross sectional diameter of the outlet.
20. The water propulsion unit of claim 18, wherein the cross sectional area of the outlet can be varied to an optimum size to allow the maximum amount of water to exit the unit while also controlling ventilation.
21. The water propulsion unit of claim 1, wherein the upstream and the downstream impellers are both of axial flow configuration.
22. The water propulsion unit of claim 1, wherein the upstream impeller is of mixed flow configuration and the downstream impeller is of axial flow configuration.
CA2572148A 2003-07-14 2004-07-13 Impeller drive for a water jet propulsion unit Expired - Fee Related CA2572148C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
NZ526666A NZ526666A (en) 2003-07-14 2003-07-14 Impeller drive for a jet propulsion unit
NZNZ526666 2003-07-14
NZ52989103 2003-12-01
NZNZ529891 2003-12-01
PCT/NZ2004/000148 WO2005005248A1 (en) 2003-07-14 2004-07-13 Impeller drive for a water jet propulsion unit

Publications (2)

Publication Number Publication Date
CA2572148A1 true CA2572148A1 (en) 2005-01-20
CA2572148C CA2572148C (en) 2011-12-13

Family

ID=34067500

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2572148A Expired - Fee Related CA2572148C (en) 2003-07-14 2004-07-13 Impeller drive for a water jet propulsion unit

Country Status (9)

Country Link
US (2) US7448926B2 (en)
EP (1) EP1644243B1 (en)
AT (1) ATE480449T1 (en)
AU (1) AU2004255990C1 (en)
CA (1) CA2572148C (en)
DE (1) DE602004029043D1 (en)
DK (1) DK1644243T3 (en)
NZ (1) NZ526666A (en)
WO (1) WO2005005248A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ539561A (en) 2005-05-21 2007-09-28 Propeller Jet Ltd Propulsion or pumping device with impellers on counter-rotating shafts deflecting in lateral directions
DK2481796T3 (en) 2007-10-09 2014-08-04 Danisco Us Inc Glucoamylase variants
CN102015439B (en) * 2008-03-27 2014-07-02 罗尔斯-罗伊斯股份公司 Method and system for system for a water jet propulsion system for a ship
DE102009059998A1 (en) 2009-12-21 2011-06-22 Fuchs Technology Holding Ag Steel plant comprises a processing area for melting steel scrap, and a material supply area for collecting and loading steel scrap in which an electrical melting furnace and an electrical crucible furnace are arranged
NZ587752A (en) 2010-09-02 2013-03-28 Propeller Jet Ltd High mass and low pressure liquid propulsion with counter-rotating impellers with reversal of drive to impellers to reverse flow direction
US9127679B2 (en) 2012-11-29 2015-09-08 General Electric Company Counter rotating helico-axial pump
CN103291651A (en) * 2013-06-08 2013-09-11 江苏科技大学 Double-stage variable-speed oppositely-rotating axial flow pump flow passage component for water spraying propelling
RU2538748C1 (en) * 2013-07-19 2015-01-10 ООО Научно-производственное объединение "Гидродинамика" Water-jet propeller
WO2016050006A1 (en) * 2014-09-29 2016-04-07 摩尔动力(北京)技术股份有限公司 Compression-expansion counter-rotating impeller mechanism
RU2735155C1 (en) * 2020-01-27 2020-10-28 Акционерное общество "Центральное конструкторское бюро морской техники "Рубин" Water-jet propeller blade system
CN113480006A (en) * 2021-07-21 2021-10-08 河南景尚环保科技有限公司 Sewage treatment bilobed wheel backwash pump based on CRI system

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US588A (en) * 1838-02-01 Steam
US3153907A (en) * 1960-10-15 1964-10-27 Rolls Royce Power plant for driving fluid impeller means
US3269111A (en) * 1964-04-01 1966-08-30 Allis Chalmers Mfg Co Power train for jet propelled water craft
US3561392A (en) 1967-10-23 1971-02-09 Guillermo Federico Baez Unit of propulsion by hydrodynamic reaction
US3601989A (en) * 1969-08-29 1971-08-31 Avco Corp Marine propulsion system
US3993015A (en) * 1973-10-19 1976-11-23 Janusz Klepacz Hydraulic jet propulsion system
DE3831136A1 (en) * 1988-09-13 1990-03-15 Hirsch Loida Method for improving the efficiency and for reducing the cavitation, vibrations and underwater sound of turbo-machines, such as, for example, preferably underwater turbo-machines or drive machines, such as, for example, preferably single-stage or multi-stage propellers or turbine systems
DE3942672A1 (en) 1989-12-22 1991-07-04 Merz Josef Marine craft jet drive - has pump with two rotors rotating in opposite directions
CA2146983C (en) * 1992-10-13 2002-07-23 Richard Gwyn Davies Water jet propulsion unit for use in a jet boat
NZ256488A (en) 1992-10-13 1996-10-28 Richard Gwyn Davies Water jet propulsion unit; details regarding pump section and nozzle
JPH0840374A (en) * 1994-08-01 1996-02-13 Sanshin Ind Co Ltd Water jet propulsion unit
US5480330A (en) * 1994-10-04 1996-01-02 Outboard Marine Corporation Marine propulsion pump with two counter rotating impellers
NZ329999A (en) 1996-07-23 1999-01-28 Richard Gwyn Davies Hydraulic jet propulsion apparatus for boats comprising counter rotating impellers on parallel drive shafts in separate passages
US6193569B1 (en) 1996-10-11 2001-02-27 Richard Gwyn Davies Water jet propulsion unit for use in water borne craft
US5839927A (en) 1996-10-31 1998-11-24 United Defense, Lp Water jet system
NZ334355A (en) 1996-11-11 2000-04-28 Barry John Davies Axial flow water jet propulsion unit comprising impellers mounted upstream of the drive transmission carrier
DE19717175A1 (en) 1997-04-24 1998-10-29 Voith Hydro Gmbh Water jet propulsion for a watercraft
AUPO735397A0 (en) * 1997-06-13 1997-07-10 Cameron, Ron Contra-rotating ducted impellers
JP2003513839A (en) 1998-12-24 2003-04-15 リチャード・グウィン・デイビス， Water jet propulsion unit used for waterborne craft
US6273768B1 (en) * 2000-04-07 2001-08-14 Bombardier Motor Corporation Of America Water jet propulsion unit with counter-rotating impellers

Also Published As

Publication number Publication date
DE602004029043D1 (en) 2010-10-21
US20090022576A1 (en) 2009-01-22
AU2004255990B2 (en) 2010-07-29
NZ526666A (en) 2004-11-26
EP1644243A1 (en) 2006-04-12
US7448926B2 (en) 2008-11-11
CA2572148C (en) 2011-12-13
ATE480449T1 (en) 2010-09-15
AU2004255990A1 (en) 2005-01-20
EP1644243B1 (en) 2010-09-08
US20070009355A1 (en) 2007-01-11
US7824237B2 (en) 2010-11-02
AU2004255990C1 (en) 2011-11-10
DK1644243T3 (en) 2011-01-03
WO2005005248A1 (en) 2005-01-20
EP1644243A4 (en) 2008-01-23

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Effective date: 20220301

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